package com.example.webwuziqi;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.Point;
import android.os.Bundle;
import android.os.Parcelable;
import android.support.annotation.Nullable;
import android.util.AttributeSet;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

import cn.bmob.v3.BmobObject;
import cn.bmob.v3.BmobQuery;
import cn.bmob.v3.exception.BmobException;
import cn.bmob.v3.listener.FindListener;
import cn.bmob.v3.listener.SaveListener;
import cn.bmob.v3.listener.UpdateListener;

/**
 * Created by yls on 2019/5/17.
 */

public class WuziqiPanel extends View{
    private int mPanelWidth;
    private float mLineHeight;
    private int MAX_LINE = 10;
    private int MAX_COUNT_IN_LINE = 5;
    private Paint mPaint = new Paint();
    private Bitmap mWhitePiece;
    private Bitmap mBlackPiece;
    private float ratioPiece0fLineHeight = 3 * 1.0f / 4;
    //白棋先手，当前轮到白棋
    private boolean mIsWhite = true;
    private ArrayList<Point> mWhiteArray = new ArrayList<>();
    private ArrayList<Point> mBlackArray = new ArrayList<>();

    private boolean mIsGameOver;
    private boolean mIsWhiteWinner;

    private String matchId="123456";

    public WuziqiPanel(Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);

        //setBackgroundColor(0x44ff0000);
        init();
    }

    private void init() {
        mPaint.setColor(0x88000000);
        mPaint.setAntiAlias(true);
        mPaint.setDither(true);
        mPaint.setStyle(Paint.Style.STROKE);

        mWhitePiece = BitmapFactory.decodeResource(getResources(),R.drawable.stone_w2);
        mBlackPiece=BitmapFactory.decodeResource(getResources(),R.drawable.stone_b1);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {

        int widthSize = MeasureSpec.getSize(widthMeasureSpec);
        int widthMode = MeasureSpec.getMode(widthMeasureSpec);

        int heightSize = MeasureSpec.getSize(heightMeasureSpec);
        int heightMode = MeasureSpec.getMode(heightMeasureSpec);

        int width = Math.min(widthSize,heightSize);

        if(widthMode == MeasureSpec.UNSPECIFIED){
            width = heightSize;
        }else if(heightMode == MeasureSpec.UNSPECIFIED){
            width = widthSize;
        }

        setMeasuredDimension(width,width);
    }

    @Override
    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
        super.onSizeChanged(w, h, oldw, oldh);

        mPanelWidth = w;
        mLineHeight = mPanelWidth * 1.0f / MAX_LINE;

        int pieceWidth = (int) (mLineHeight * 5.0f /MAX_LINE);
       // Log.e("m","pieceWidth:"+pieceWidth);

        mWhitePiece = Bitmap.createScaledBitmap(mWhitePiece,pieceWidth,pieceWidth,false);
        mBlackPiece = Bitmap.createScaledBitmap(mBlackPiece,pieceWidth,pieceWidth,false);
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        if(mIsGameOver) return false;

        int action = event.getAction();
        if(action == MotionEvent.ACTION_UP){
            int x = (int) event.getX();
            int y = (int) event.getY();

            Point p = getValidPoint(x,y);

            if(mWhiteArray.contains(p) || mBlackArray.contains(p)){
                return false;
            }

            if(mIsWhite){
                mWhiteArray.add(p);
            }else {
                mBlackArray.add(p);
            }
            invalidate();
            mIsWhite = !mIsWhite;
            saveToBmob();
        }

        return true;
    }

    private void saveToBmob() {
        BmobQuery<WuziData> wuziDataBmobQuery=new BmobQuery<>();
        wuziDataBmobQuery.addWhereEqualTo("matchId",matchId);
        wuziDataBmobQuery.findObjects(new FindListener<WuziData>() {
            @Override
            public void done(List<WuziData> list, BmobException e) {
                if(e==null && list!=null && list.size()>0){
                    WuziData wuziData=list.get(0);
                    wuziData.setmBlackArray(mBlackArray);
                    wuziData.setmWhiteArray(mWhiteArray);
                    wuziData.setmIsGameOver(mIsGameOver);
                    wuziData.setmIsWhite(mIsWhite);
                    wuziData.setmIsWhiteWinner(mIsWhiteWinner);
                    wuziData.update(new UpdateListener() {
                        @Override
                        public void done(BmobException e) {

                        }
                    });
                }else {
                    WuziData wuziData=new WuziData();
                    wuziData.setMatchId(matchId);
                    wuziData.setmBlackArray(mBlackArray);
                    wuziData.setmWhiteArray(mWhiteArray);
                    wuziData.setmIsGameOver(mIsGameOver);
                    wuziData.setmIsWhite(mIsWhite);
                    wuziData.setmIsWhiteWinner(mIsWhiteWinner);
                    wuziData.save(new SaveListener<String>() {
                        @Override
                        public void done(String s, BmobException e) {

                        }
                    });
                }
            }
        });
    }

    private Point getValidPoint(int x, int y) {
        return new Point((int)(x / mLineHeight),(int)(y / mLineHeight));
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);

        drawBoard(canvas);
        drawPieces(canvas);
        checkGameOver();
    }

    private void checkGameOver() {
        boolean whiteWin = checkFiveInLine(mWhiteArray);
        boolean blackWin = checkFiveInLine(mBlackArray);

        if(whiteWin || blackWin){
            mIsGameOver = true;
            mIsWhiteWinner = whiteWin;

            String text = mIsWhiteWinner ? "白棋胜利" : "黑棋胜利";
            Toast.makeText(getContext(), text, Toast.LENGTH_SHORT).show();
        }
    }

    private boolean checkFiveInLine(List<Point> points) {
        for(Point p : points){
            int x = p.x;
            int y = p.y;

            boolean win = checkHorizontal(x,y,points);
            if(win) return true;
            win = checkVertical(x,y,points);
            if(win) return true;
            win = checkLeftDiagonal(x,y,points);
            if(win) return true;
            win = checkRightDiagonal(x,y,points);
            if(win) return true;
        }

        return false;
    }

    private boolean checkRightDiagonal(int x, int y, List<Point> points) {
        int count = 1;
        for(int i = 1;i < MAX_COUNT_IN_LINE;i++){
            if(points.contains(new Point(x - i,y - i))){
                count++;
            }else {
                break;
            }
        }
        if(count == MAX_COUNT_IN_LINE) return true;

        for(int i = 1;i < MAX_COUNT_IN_LINE;i++){
            if(points.contains(new Point(x + i,y + i))){
                count++;
            }else {
                break;
            }
        }
        if(count == MAX_COUNT_IN_LINE) return true;

        return false;
    }

    private boolean checkLeftDiagonal(int x, int y, List<Point> points) {
        int count = 1;
        for(int i = 1;i < MAX_COUNT_IN_LINE;i++){
            if(points.contains(new Point(x - i,y + i))){
                count++;
            }else {
                break;
            }
        }
        if(count == MAX_COUNT_IN_LINE) return true;

        for(int i = 1;i < MAX_COUNT_IN_LINE;i++){
            if(points.contains(new Point(x + i,y - i))){
                count++;
            }else {
                break;
            }
        }
        if(count == MAX_COUNT_IN_LINE) return true;

        return false;
    }

    private boolean checkVertical(int x, int y, List<Point> points) {
        int count = 1;
        //上
        for(int i = 1;i < MAX_COUNT_IN_LINE;i++){
            if(points.contains(new Point(x,y - i))){
                count++;
            }else {
                break;
            }
        }
        if(count == MAX_COUNT_IN_LINE) return true;

        for(int i = 1;i < MAX_COUNT_IN_LINE;i++){
            if(points.contains(new Point(x,y + i))){
                count++;
            }else {
                break;
            }
        }
        if(count == MAX_COUNT_IN_LINE) return true;

        return false;
    }

    /**
     * 判断x,y位置的棋子，是否横向有相邻的五个一致
     * @param x
     * @param y
     * @param points
     * @return
     *
     **/
    private boolean checkHorizontal(int x, int y, List<Point> points) {
        int count = 1;
        //左
        for(int i = 1;i < MAX_COUNT_IN_LINE;i++){
            if(points.contains(new Point(x - i,y))){
                count++;
            }else {
                break;
            }
        }
        if(count == MAX_COUNT_IN_LINE) return true;

        for(int i = 1;i < MAX_COUNT_IN_LINE;i++){
            if(points.contains(new Point(x + i,y))){
                count++;
            }else {
                break;
            }
        }
        if(count == MAX_COUNT_IN_LINE) return true;

        return false;
    }

    private void drawPieces(Canvas canvas) {
        for(int i = 0,n = mWhiteArray.size();i < n;i++){
            Point whitePoin = mWhiteArray.get(i);
            canvas.drawBitmap(mWhitePiece,
                    (whitePoin.x + (1-ratioPiece0fLineHeight) / 2) * mLineHeight,
                    (whitePoin.y + (1-ratioPiece0fLineHeight) / 2) * mLineHeight,null);
        }

        for(int i = 0,n = mBlackArray.size();i < n;i++){
            Point blackPoin = mBlackArray.get(i);
            canvas.drawBitmap(mBlackPiece,
                    (blackPoin.x + (1-ratioPiece0fLineHeight) / 2) * mLineHeight,
                    (blackPoin.y + (1-ratioPiece0fLineHeight) / 2) * mLineHeight,null);
        }
    }

    private void drawBoard(Canvas canvas) {
        int w = mPanelWidth;
        float lineHeight = mLineHeight;

        for(int i = 0;i<MAX_LINE;i++){
            int startX = (int) (lineHeight / 2);
            int endX = (int) (w-lineHeight / 2);
            int y = (int) ((0.2 + i) * lineHeight);
            canvas.drawLine(startX,y,endX,y,mPaint);
            canvas.drawLine(y,startX,y,endX,mPaint);
        }
    }

    public void start(){
        mWhiteArray.clear();
        mBlackArray.clear();
        mIsGameOver = false;
        mIsWhiteWinner = false;
        invalidate();
    }

    private static final String INSTANCE = "instance";
    private static final String INSTANCE_GAME_OVER="instance_game_over";
    private static final String INSTANCE_WHITE_ARRAY="instance_white_array";
    private static final String INSTANCE_BLACK_ARRAY="instance_black_array";

    @Nullable
    @Override
    protected Parcelable onSaveInstanceState() {
        Bundle bundle = new Bundle();
        bundle.putParcelable(INSTANCE,super.onSaveInstanceState());
        bundle.putBoolean(INSTANCE_GAME_OVER,mIsGameOver);
        bundle.putParcelableArrayList(INSTANCE_WHITE_ARRAY,mWhiteArray);
        bundle.putParcelableArrayList(INSTANCE_BLACK_ARRAY,mBlackArray);
        return bundle;
    }

    @Override
    protected void onRestoreInstanceState(Parcelable state) {
        if(state instanceof Bundle){
            Bundle bundle = (Bundle) state;
            mIsGameOver = bundle.getBoolean(INSTANCE_GAME_OVER);
            mWhiteArray = bundle.getParcelableArrayList(INSTANCE_WHITE_ARRAY);
            mBlackArray = bundle.getParcelableArrayList(INSTANCE_BLACK_ARRAY);
            super.onRestoreInstanceState(bundle.getParcelable(INSTANCE));
            return;
        }
        super.onRestoreInstanceState(state);
    }

    public void setData(WuziData wuziData) {
        this.mIsGameOver=wuziData.getmIsGameOver();
        this.mIsWhite=wuziData.getmIsWhite();
        this.mIsWhiteWinner=wuziData.getmIsWhiteWinner();
        this.mWhiteArray=wuziData.getmWhiteArray();
        this.mBlackArray=wuziData.getmBlackArray();
        invalidate();
    }
}
